Unit Plan
Khan Academy

Khan Academy: Adding Two Digit Numbers by Making Tens 2

For Students 1st - 3rd Standards
In this exercise, students practice adding two-digit numbers by making tens. Students receive immediate feedback and have the opportunity to watch tutorial videos, get hints, and try questions repeatedly.
Unit Plan
Khan Academy

Khan Academy: Estimate to Add and Subtract Multi Digit Whole Numbers

For Students 1st - 3rd Standards
Use estimation to find a reasonable solution to multi-digit addition and subtraction problems. Numbers are less than or equal to 1000. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a...
Unknown Type
Khan Academy

Khan Academy: Adding Two Digit Numbers (No Regrouping)

For Students Pre-K - 1st Standards
In this exercise, students practice adding two-digit numbers (no regrouping). Students receive immediate feedback and have the opportunity to get hints and try questions repeatedly.
Unit Plan
Khan Academy

Khan Academy: Multi Digit Addition

For Students 3rd - 5th Standards
Add whole numbers with sums less than 1,000,000. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
Activity
Teaching Treasures Publications

Teaching Treasures: Year Two Math (Page 1)

For Students Pre-K - 1st Standards
Improve your computation skills using this interactive worksheet. Review two digit addition and subtraction facts. This worksheet gives students immediate feedback and is a suitable tool for short assessments or independent practice.
Unknown Type
Khan Academy

Khan Academy: Subtraction Within 100

For Students 1st - 3rd Standards
In this exercise, students practice subtraction within 100. Students receive immediate feedback and have the opportunity to watch a video tutorial, get hints, and try questions repeatedly. CCSS.Math.Content.3.NBT.A.2 Fluently add and...
Lesson Plan
Illustrative Mathematics

Illustrative Mathematics: Saving Money 2

For Teachers 2nd - 3rd
The purpose of this task is for students to relate addition and subtraction problems to money and to situations and goals related to saving money. A problem is given that will contain multiple solutions, this allows students to think...
Activity
Teaching Treasures Publications

Teaching Treasures: Year Two Timed Mental Math (Page 3)

For Students Pre-K - 1st Standards
Increase your addition and subtraction speed using this timed interactive worksheet. With just ten problems and five minutes, this worksheet is suitable for practice or as an assessment tool. Check your answers immediately.
Unit Plan
Khan Academy

Khan Academy: Addition Within 100

For Students 2nd - 3rd Standards
In this exercise, students practice addition within 100. Students receive immediate feedback and have the opportunity to watch a tutorial video get hints, and try questions repeatedly. CCSS.Math.Content.3.NBT.A.2 Fluently add and...
Unit Plan
CK-12 Foundation

Ck 12: Elem Math: Filling in the Missing or Sign Numbers to 100

For Students 1st - 2nd
[Free Registration/Login may be required to access all resource tools.] The video works through 2-digit addition and subtraction problems to determine which number sentence coincides with the given value. The video is followed by...
Activity
Teaching Treasures Publications

Teaching Treasures: Year Four Math (Page 2)

For Students 3rd - 8th Standards
This interactive worksheet combines all four operations. The focus is on three-digit addition and subtraction and basic multiplication and division facts. This easy to navigate activity offers learners immediate feedback and would be...
Unit Plan
Khan Academy

Khan Academy: Addition Using Groups of 10 and 100

For Students 3rd - 5th Standards
In this exercise, students practice addition using groups of 10 and 100. Students receive immediate feedback and have the opportunity to get hints, watch a video tutorial, and try questions repeatedly. CCSS.Math.Content.3.NBT.A.2...
Unit Plan
Lawrence Hall of Science

The Math Page: Skill in Arithmetic: The Meaning of Subtraction, and Mental Calculation

For Students Pre-K - 1st Standards
This website explains and defines basic subtraction. There are practice problems at the very end of this lesson.
Activity
Teaching Treasures Publications

Teaching Treasures: Year Three Math (Page 1)

For Students Pre-K - 1st Standards
Sharpen your mathematical skills with this interactive worksheet that combines two-digit addition, two-digit subtraction, and basic multiplication facts. This activity is easy to grasp and gives learners immediate feedback to their...
Activity
Teaching Treasures Publications

Teaching Treasures: Year Five Math (Page 2)

For Students 3rd - 8th Standards
Use this interactive worksheet for practice or assessment of basic computation skills. Problems covering all four operations are included such as four-digit addition and subtraction and multiplication and division facts through twelve...
Interactive
Topmarks Online

Topmarks: Helicopter Rescue

For Students K - 1st
A game which helps students identify and work with two-digit numbers. There are four game modes: Find a Number, Find the Number Between Count On, and Count Back. The counting on and back games reinforce the vocabulary of addition and...
Unknown Type
Khan Academy

Khan Academy: Regrouping When Adding One Digit Numbers

For Students Pre-K - 1st Standards
In this exercise, students practice regrouping when adding one-digit numbers. Students receive immediate feedback and have the opportunity to get hints and try questions repeatedly.
Unit Plan
Khan Academy

Khan Academy: Add and Subtract on a Number Line

For Students 1st - 3rd Standards
Practice adding and subtracting numbers like 554 and 237 using a number line. All numbers are less than 1000. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
Activity
Teaching Treasures Publications

Teaching Treasures: Year Four Math (Page 1)

For Students 3rd - 8th Standards
This interactive worksheet combines all four operations. The focus is on addition and subtraction fact through one hundred and basic multiplication and division facts. This easy to navigate activity offers learners immediate feedback and...
Interactive
Topmarks Online

Topmarks: Blast Off

For Students Pre-K - 1st Standards
Play these games to check your understanding of two-digit numbers. The oral questions provide practice in listening skills, the Count On and Count Back games provide practice with the vocabulary of addition and subtraction.
Professional Doc
Louisiana Department of Education

Louisiana Doe: Louisiana Believes: Eureka Math Parent Guide: Multi Digit Whole Number and Decimal Fraction Operations

For Students 5th
A guide to support parents as they work with their students with multi-digit whole number and decimal fraction operations.
Lesson Plan
Illustrative Mathematics

Illustrative Mathematics: 2.nbt Many Ways to Do Addition 2

For Teachers 2nd Standards
This lesson plan has students exploring was to add and subtract numbers with multi-digits and place value.
Activity
Teaching Treasures Publications

Teaching Treasures: Year Four Timed Mental Math (Page 2)

For Students 3rd - 5th Standards
Improve your computations skills in all four operations with this timed interactive worksheet. Solve ten problems in five minutes or less. Problems are presented in horizontal format and answers can be checked immediately. This worksheet...
Unit Plan
CK-12 Foundation

Ck 12: Elem Math: Mixed Operations Selecting the Correct Sentence

For Students 2nd - 4th Standards
[Free Registration/Login may be required to access all resource tools.] The video shows how to add and subtract three digit numbers to determine which number sentence matches the correct solution. The video is followed by a series of...